AMERICAN PHILOSOPHICAL SOCIETY. 469 



near the scutel, obsolete, interstitial lines depressed, third one 

 with two distant obsolete punctures behind the middle ; wings 

 none ; pectus in some lights slightly tinged with green ; tarsi 

 piceous. 



Resembles tartaricus, but is distinguished by the thoracic hind 

 angles being less acute and the elytral striae punctured ; from 

 unicohr it is at once distinguished by the less rounded form of 

 the thorax and its less contracted base ; from stygicus, to which 

 by form it is more closely allied, it may be readily separated by 

 the punctured striae, &c. 



Found on Mr. R. Haines's farm, Germantown. 



It belongs to the genus Pterostichus of Bonelli. 



[Afterwards described as F. vidua Dej.; belongs to Evar- 

 thrus. — Lec] 



14. F. PLACID A. — Blackish, glabrous ; thorax transversely sub- 

 orbicular, margined ; elytra with acute impunctured strias. 



Length seven-twentieths of an inch. 



Carabus peltatus Melsh. Catal. 



Head purple-black slightly tinged with green ; antennae black- 

 ish, rufous at base ; palpi rufous or piceous ; thorax a little nar- 

 rower than the elytra, transversely suborbicular, blackish, slightly 

 tinged with green ; margin depressed, edge a little recurved, parti- 

 cularly at the hind angles, which are not excurved; dorsal line and 

 anterior transverse line impressed, basal lines almost obsolete in 

 the concavity of the lateral base, which is a little rugous ; elytra 

 blackish with an obsolete purplish tint; striae not profound, acute, 

 impunctured ; iuterttitial lines very slightly convex ; [44] pectus 

 and postpectus black ; feet black ; tibias and tarsi piceous ; abdo- 

 men black. 



[A Flatynus of the division Agonum, and afterwards described 

 as A. morosum Dej. — Leg.] 



15. F. TARTARICA.— Entirely black, immaculate, glabrous; 

 striae of the elytra impunctured. 

 Length three-fourths of an inch. 



Body glabrous, black; head frontal lines distinct; antennae, 

 ferruginous hair towards the tips, joints attenuated towards their 

 bases; labrum truncate; thorax large, transverse, gradually a 



1823.] 



